flame hardening meaning in Hindi

Flame hardening is a very common surface hardening technique, which is often used to provide a very wear-resistant surface.
However, unlike a blade that has been evenly heated and differentially quenched, flame hardening creates a heat-affected zone.
With flame hardening and induction hardening techniques, the steel is quickly heated to red-hot in a localized area and then quenched.
Flame hardening is often used to harden only a portion of an object, by quickly heating it with a very hot flame in a localized area, and then quenching the steel.
-machines and technologies for flame hardening of various machine details crankshafts and camshafts, guide rails for metal cutting machines, gears, brake disks, etc . at the machine plants " V . Kolarov " Varna, " Struma " Pernik, " N . Y . Vaptsarov " Pleven, Metal Cutting Machines Plants in Troyan, Sliven, Vratsa, Pazardzhik.